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The Case for DC: Motivation of Modern Topologies, DC-Powered Solutions, and Applications within Residential Environments.
Evaluation of a Hybrid AC/DC Powered Residential Split-System Heat Pump Performance using a DC Nanogrid.
IIR document
Cryogenic components for a superconducting DC-rail.
Performance comparison of a residential split-system heat pump powered on AC versus DC voltage.
Effect of DC magnetic field on freezing process of onion cells.
[In Chinese. / En chinois.]
Impianto di refrigerazione ad alta efficienza. Unità motocondensanti equipaggiate con compressore DC.
High efficiency refrigeration systems. Condensing units equipped with DC compressors.
Comparative techno-economic assessment of a converted DC refrigerator and a conventional AC refrigerator both powered by solar PV.
Performance study of a DC refrigerator powered by different solar PV modular sets. 2.
Design and implementation of a solar PV emulator.
High energy efficiency solution for condensing units fitted with DC compressors.
Design and control of brushless DC motor drives for refrigerated cabinets
Development and comparative analysis of a power-over-ethernet (PoE) DC lighting system for residential buildings.
Research of variable volume and gas injection DC inverter air conditioner compressor.
Experimental performance assessment of DC-inverter operated split packaged air conditioner using HC-290.
Investigations on the coupling principle of the four-stage DC linear compressor unit used in a hybrid cryocooler operating in 1–2 K.
Refrigeration sector monitoring
16 results
The FresH2 project is testing a hydrogen fuel cell to power the refrigeration unit of a semi-trailer
Bosch’s French subsidiary has developed a hydrogen fuel cell to replace the diesel power supply traditionally used to power the refrigeration unit of semi-trailers. The system is currently being tested on a...
2024: A record-breaking year for global temperatures, surpassing 1.5°C threshold
According to the Copernicus Climate Change Service, 2024 has officially become the warmest year on record, surpassing previous temperature highs and signaling a new phase in global climate change.
Latest figures on HFC impact on climate change
EU reports that hydrofluorocarbons (HFCs) emissions from refrigeration and air conditioning (RAC) have decreased for the fourth consecutive year since 2014. On a global scale, the impact of HFCs on climate...
Barbados releases a national strategy for sustainable cooling
The Caribbean island of Barbados released its national cooling strategy in September 2022, as the country experiences an increase in demand for air conditioners.
The global refrigeration compressor market
Bien que pénalisé par la pandémie de Covid-19 qui a fortement impacté le secteur du conditionnement d’air, le marché des compresseurs a progressé dans certains domaines tels que la chaîne du froid, l’industrie...
Frozen avocados to meet the booming global “avo craze”
Frozen avocado pieces or products represent a rising market for exporters to guarantee year-round supply of avocados, which is becoming crucial to the food service sector.
Challenges for post-pandemic food cold chain
The COVID-19 pandemic has revealed several shortcomings in the global food cold chain. In the aftermath of the pandemic, investment in the cold chain is necessary to maximise access to food and reduce waste....
The district cooling network of Paris will be extended by 158 km within 20 years
Paris’ district cooling network currently covers over 86 kilometres and will be extended to 250 kilometres by 2042. It will increase the city's contribution to the carbon neutrality objective by...
New standards for “intelligent” ACs implemented in China
China implements new standard to officially define and set technological requirements for intelligent ACs. Additionally, a Chinese air-conditioning manufacturer is the first company in China to achieve a global...
Recent advances in hydrogen liquefaction and storage
Several review articles present a comprehensive overview of the liquid hydrogen supply chain. IIR members Linde and Air Liquide are contributing to address the global demand for...
The global air-conditioning market in 2021: focus on Africa
126 million room air conditioners were sold in 2021 worldwide (+3% compared to 2020). The African market has seen a similar increase, but many of the units sold still have low energy efficiency and use obsolete...
A must-read in the IJR: a review of storage temperatures for biological material
To improve storage efficiency, the authors of a review article take stock of storage temperatures for biological material (cells, proteins, DNA, etc).
Europe 2025 heatwaves: demand for AC surges as heat-related deaths triple
Recent analyses from the World Meteorological Organization, the World Resources Institute and the Imperial College London take stock of this summer’s heatwaves in Europe.
Refrigerated containers: state of play and perspectives
Refrigerated containers play an essential role in the maritime refrigerated transport sector; a look back at the stages of their development and the recent and future technological advances of this...
Cryogenics 2021 highlights: applications of liquid nitrogen
Cryopreservation of biological materials to favour biodiversity and cooling of superconducting cables to allow transmission of electrical energy with zero resistance are key applications of liquid...
IIR news
4 results
International Institute of Refrigeration (IIR) releases new technical brief: “The role of refrigeration in the global economy (3rd edition)”
This comprehensive report highlights the critical importance of refrigeration in addressing global challenges related to food security, healthcare, energy efficiency, and climate change.
What do refrigeration, air conditioning and social media have in common? A lot!
In 2014, an awareness raising social media campaign by Stephen Gill praising the too often overlooked virtues and benefits of refrigeration caused quite a stir, going viral.
What role does social media play in today’s refrigeration industry?
Today, social media has become an important tool of daily life for many across the globe in diverse fields and sectors. Learn how to reap the benefits of social media in your expertise.
The IIR is seeking a Communication Manager
The IIR is seeking for its head office in Paris preferably a English-mother-tongue Communication Manager, with fluent French, who will manage the IIR’s communication policy and conferences.
Encyclopedia of Refrigeration
2 results
Cryogenic nitrogen in the food and beverage industry
The adoption of cryogenic processes in the food and beverage industry is predominantly driven by liquid nitrogen (LIN), and it is the preferred candidate for food chilling and...
Additive manufacturing of heat exchangers
In the refrigeration industry, additive manufacturing (colloquially referred to as “3D printing”) makes it possible to fabricate novel, complex and potentially more energy efficient...
